﻿// Copyright (c) 2014 AlphaSierraPapa for the SharpDevelop Team
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy of this
// software and associated documentation files (the "Software"), to deal in the Software
// without restriction, including without limitation the rights to use, copy, modify, merge,
// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
// to whom the Software is furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in all copies or
// substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.

#region Usings

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml.Linq;

#endregion

namespace ICSharpCode.Data.EDMDesigner.Core.IO
{
    public static class XElements
    {
        private static XAttribute GetAttribute(XNamespace xmlns, string attributeName, object value)
        {
            if (value == null)
                return null;

            if (xmlns == null)
                return new XAttribute(attributeName, value);
            else
                return new XAttribute(xmlns + attributeName, value);
        }

        public static XElement AddAttribute(this XElement element, XAttribute attribute)
        {
            if (attribute != null)
                element.Add(attribute);
            
            return element;
        }

        public static XElement AddAttribute(this XElement element, XNamespace xmlns, string attributeName, object value)
        {
            return AddAttribute(element, GetAttribute(xmlns, attributeName, value));
        }

        public static XElement AddAttribute(this XElement element, string attributeName, object value)
        {
            return AddAttribute(element, GetAttribute(null, attributeName, value));
        }

        public static XElement AddElement(this XElement parentElement, XElement childElement)
        {
            if (childElement != null)
                parentElement.Add(childElement);

            return parentElement;
        }
    }
}
